2005/02/07 by C. Bizdadea, C Bizdadea, E. M Cioroianu +5
Physics and Astronomy · #Black Holes and Theoretical Physics #Dirac (video compression format) #Dirac fermion #Dirac sea #Field (mathematics) #Field theory (psychology) #Graviton #Lorentz covariance #Massless particle #Noncommutative and Quantum Gravity Theories #Quantum and Classical Electrodynamics #Quantum field theory #hep-th
paper · pdf · doi:10.1088/1126-6708/2005/02/016
published as JHEP0502:016,2005 · 48 pages
openalex publication_date 2005/02/07 · arxiv created 2007/04/18 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The cross-couplings among several massless spin-two fields (described in the free limit by a sum of Pauli-Fierz actions) in the presence of a Dirac field are investigated in the framework of the deformation theory based on local BRST cohomology. Under the hypotheses of locality, smoothness of the interactions in the coupling constant, Poincare invariance, (background) Lorentz invariance and the preservation of the number of derivatives on each field, we prove that there are no consistent cross-interactions among different gravitons in the presence of a Dirac field. The basic features of the couplings between a single Pauli-Fierz field and a Dirac field are also emphasized.